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Method and device for achieving wireless energy transmission based on metal grid cavity structure

A metal grid and wireless energy transmission technology, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of cost, large cavity size, and practical application difficulties, so as to reduce the difficulty of implementation and work Low frequency, little effect on human health

Active Publication Date: 2019-11-26
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

However, this method has relatively high requirements for the device, and requires the resonant structure to have a high quality factor Q, and needs to build a closed metal cavity structure, and the cavity size is often large, which brings cost problems and is difficult to break away from. In the laboratory environment, it is difficult to apply in practice

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  • Method and device for achieving wireless energy transmission based on metal grid cavity structure
  • Method and device for achieving wireless energy transmission based on metal grid cavity structure
  • Method and device for achieving wireless energy transmission based on metal grid cavity structure

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Embodiment Construction

[0041] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, so as to understand the features and advantages of the present invention more clearly.

[0042] This embodiment provides a method and device for realizing wireless energy transmission based on a metal grid cavity structure. The structural diagram of the device is shown in figure 1 shown. The system consists of a transmitter, a metal grid cavity and a receiver.

[0043] The transmitter adopts a linear probe antenna. When it is at a specific position in the metal grid cavity, the electromagnetic wave changing in the excitation cavity is reflected on the inner wall of the metal grid cavity structure to form a standing wave, and then forms an electromagnetic field mode, and then through the receiving The receiver coil in the receiver resonates with the electromagnetic field pattern to wirelessly transmit power to the receiver.

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Abstract

The invention discloses a method and device for achieving wireless energy transmission based on a metal grid cavity structure, and belongs to the technical field of wireless energy transmission. The metal grid cavity structure is based on the characteristic that the non-penetrable size of electromagnetic waves is far smaller than the wavelength of the electromagnetic waves; when the grid size of the metal grid cavity is small, standing waves can be generated through excitation, then field distribution of a specific electromagnetic field mode is formed, a wireless energy transmission method based on a quasi-static resonant cavity is combined, the electromagnetic field mode in a metal grid cavity is excited through a probe antenna, and energy transmission is conducted through field distribution of the mode and resonance of a coil in a receiving module. On the basis of the electromagnetic shielding effect and the standing wave forming theory, the metal grid cavity structure is adopted toreplace a closed metal cavity, the electromagnetic field mode of the cavity can be effectively excited for wireless energy transmission, and meanwhile inconvenience brought by cost and application canbe avoided.

Description

technical field [0001] The invention belongs to the technical field of wireless energy transmission, and in particular relates to a method and device for realizing wireless energy transmission based on a metal grid cavity structure. Background technique [0002] With the rapid development of electronic devices such as mobile phones, tablet computers, and smart bracelets, the traditional energy transmission method that uses power transmission cables to power equipment will bring a series of problems such as high cost, inconvenient portability, and complicated cable arrangement. Using wireless to transmit energy can solve these problems very well. Wireless Power Transfer (WPT) refers to the wireless transmission of energy from the power supply end to the load end. It does not require direct contact with metal electrodes, which can avoid the exposure of conductors and the generation of electric sparks. Compared with the traditional wired energy transmission method, wireless en...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 张巧利岳震赵德双
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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